Submission #1202342

#	Time	Username	Problem	Language	Result	Execution time	Memory
1202342		Warinchai	Rabbit Carrot (LMIO19_triusis)	C++20	0 / 100	1 ms	784 KiB

triusis

#include<bits/stdc++.h>
#define int long long
using namespace std;
pair<int,int>dp[200005][2];
int ar[200005];
int inf=1e12;
int32_t main(){
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    int n,m;cin>>n>>m;
    for(int i=1;i<=n;i++)cin>>ar[i];
    ar[0]=inf;
    dp[0][0]={0,m};
    dp[0][1]={-inf,0};
    for(int i=1;i<=n;i++)dp[i][0]=dp[i][1]={-inf,inf};
    for(int i=1;i<=n;i++){
        //0 0
        if(ar[i]<=dp[i-1][0].second)dp[i][0]=max(dp[i][0],{dp[i-1][0].first,ar[i]+m});
        //1 0
        if(ar[i]<=dp[i-1][1].second)dp[i][0]=max(dp[i][0],{dp[i-1][1].first,ar[i]+m});
        //0 1
        dp[i][1]=max(dp[i][1],{dp[i-1][0].first-1,dp[i-1][0].second+m});
        //1 1
        dp[i][1]=max(dp[i][1],{dp[i-1][1].first-1,dp[i-1][1].second+m});
    }
    int ans=min(-dp[n][0].first,-dp[n][1].first);
    cout<<ans;
}

• Subtask 1: 0 / 14
• Subtask 2: 0 / 21
• Subtask 3: 0 / 28
• Subtask 4: 0 / 37